GB/T 13465.8 - 2009 Focus on the key performance testing of impermeable graphite adhesives. The standard details the preparation of samples for testing, from graphite material selection to bonding molding, every step is strictly regulated to ensure that the samples can truthfully reflect the characteristics of the adhesive. Clear guidelines are given for the selection and debugging of test instruments to ensure the accurate operation of the equipment. In the testing process, the operation points such as loading method and force control are clearly specified. With this standard, the adhesive shear strength data of the adhesive can be accurately obtained, providing a reliable mass evaluation basis for the chemical industry, machinery and other industries that rely on impermeable graphite connections, and helping enterprises optimize production and improve product mass.